Nose Landing Gear Shimmy Analysis Considering Fuselage Local Stifness
-
摘要: 针对飞机机体局部刚度偏弱导致的摆振问题,建立了一套分析模型。该模型可以分析机体局部弯曲刚度和扭转刚度对起落架摆振临界阻尼、动响应的影响。模型计算结果显示,机体局部弯曲、扭转刚度对起落架摆振临界阻尼影响很大,临界阻尼系数增大一倍以上。将某型飞机起落架参数代入分析模型计算机轮摆角动响应,不考虑机体局部刚度时振动收敛,而考虑机体局部刚度时振动就发散,这与试验结果相吻合,计算和试验结果表明飞机局部刚度偏弱可能导致起落架发生摆振。Abstract: Nose landing gear shimmy model because of week fuselage local stiffness is established. The model can analyze the contribution of fuselage local stiffness on the shimmy critical damping coefficient and dynamic swinging response. The results show that shimmy critical damping coefficient can increase to 2 times because of contribution of fuselage local stiffness. The swinging angle response of a landing gear is convergent, but the response of swinging angle considering fuselage local stiffness is divergent. The analysis results accord to the test.
-
[1] Von Schlippe D R. The shimmy of pneumatic 5tire[R]. NACA TM1365, 1954 [2] Smiley R F. Correlation, evaluation, and extension of linearized theories for tire motion and wheel shimmy[R]. NACA Report 1299, 1957 [3] Pacejka H B. The tyre as a vehicle component[C]//Proceedings of the 26th FISITA Congress. Prague, Czechoslovakia:FISITA, 1996 [4] Moreland W J. The story of shimmy[J]. Journal of the Aeronautical Sciences, 1954,21(12):793-808 [5] Krabacher W E. A review of aircraft landing gear dynamics[R]. AGARD R-800, 1995 [6] Krabacher W E. A comparison of the Moreland and von Schlippe-Dietrich landing gear tire shimmy models[J]. Vehicle System Dynamics, 1997,27(S1):335-338 [7] 诸德培.摆振理论及防摆措施[M].北京:国防工业出版社,1984 Zhu D P. Shimmy theory and Anti-shimmy messures[M]. Beijing:National Defence Industry Press, 1984(in Chinese) [8] Baumann J. A nonlinear model for landing gear shimmy with applications to the McDonnell Douglas F/A-18A[R]. AGARD R-800, 1996 [9] Sura N K, Suryanarayan S, Dipak K M, et al. Stability and response studies on non-linear models of nose-wheel landing gears[C]//Proceedings of Aerospace and Related Mechanisms 2002. Trivendrum, Kerala, India:Vikram Sarabhai Space Center, 2002:238-242 [10] Sura N K. Lateral stability and response of nose wheel landing gears[D]. Mumbai, India:Indian Institute of Technology, 2004 [11] Yadav D, Nigam N C. Ground induced non-stationary response of vehicles[J]. Journal of Sound and Vibration, 1978,61(1):117-126 [12] Somieski G. Shimmy analysis of a simple aircraft nose landing gear model using different mathematical methods[J]. Aerospace Science and Technology, 1997,1(8):545-555 [13] Sura N K, Suryanarayan S. Lateral response of nose-wheel landing gear system to ground-induced excitation[J]. Journal of Aircraft, 2007,44(6):1998-2005 [14] 陈大伟,顾宏斌.起落架摆振控制及试验研究综述[J].飞机设计,2011,31(2):38-41 Chen D W, Gu H B. Review of landing gear shimmy control and tests[J]. Aircraft Design, 2011,31(2):38-41(in Chinese) [15] 陈大伟,顾宏斌,刘晖.起落架摆振主动控制分岔研究[J].振动与冲击,2010,29(7):38-42 Chen D W, Gu H B, Liu H. Active control for landing gear shimmy with bifurcation theories[J]. Journal of Vibration and Shock, 2010,29(7):38-42(in Chinese) [16] 冯飞,常正,聂宏,等.飞机柔性对前起落架摆振的影响分析[J].航空学报,2011,32(12):2227-2235 Feng F, Chang Z, Nie H, et al. Analysis of influence of aircraft flexibility on nose landing gear shimmy[J]. Acta Aeronautica et Astronautica Sinica, 2011,32(11):2227-2235(in Chinese) [17] 寇明龙.支柱式前起落架摆振性能研究[J].航空科学技术,2014,25(9):19-23 Kou M L. Study on the shimmy of nose landing gear[J]. Aeronautical Science & Technology, 2014,25(9):19-23(in Chinese) [18] Howcroft C, Krauskopf B, Lowenberg M H, et al. Influence of variable side-stay geometry on the shimmy dynamics of an aircraft dual-wheel main landing gear[J]. SIAM Journal on Applied Dynamical Systems, 2013,12(3):1181-1209 [19] Medzorian J. An investigation of landing gear shimmy:tire models, tire test methodologies, analysis and parameter studies[R]. SAE Technical Paper 1999-01-5527, 1999
点击查看大图
计量
- 文章访问数: 154
- HTML全文浏览量: 18
- PDF下载量: 5
- 被引次数: 0